#304E99#304E99

#304E99 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.3% C 0.128 H 265.2°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#304E99
RGB	rgb(48, 78, 153)
HSL	hsl(223, 52%, 39%)
HSV	hsv(223, 69%, 60%)
CMYK	cmyk(68.6%, 49%, 0%, 40%)
CIE-LAB	lab(34.75, 14.82, -44.40)
CIE-LCH	lch(34.75, 46.81, 288.46°)
OKLab	oklab(44.27% -0.0107 -0.1272)
OKLCH	oklch(44.27% 0.128 265.2)
XYZ	xyz(9.6911, 8.3761, 31.2368)
Luminance	0.0838 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304E99 #997B30

analogous

#308399 #304E99 #473099

triadic

#304E99 #99304E #4E9930

tetradic

#304E99 #993083 #997B30 #309947

square

#304E99 #993083 #997B30 #309947

split-complementary

#304E99 #994730 #839930

monochromatic

#131F3C #21366A #304E99 #4267C4 #718DD2

Accessibility & contrast

On white

7.85

#304E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#304E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304E99

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304E99	#FFFFFF	#000000	##FFFFFF
##304E99	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26579C

Deuteranopia (green-blind)

#0C4D97

Tritanopia (blue-blind)

#005F6C

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304e99;
/* rgb */ color: rgb(48, 78, 153);
/* oklch */ color: oklch(44.3% 0.128 265.2);

Tailwind

colors: {
  custom: {
    50: '#757fb7',
    500: '#304e99',
    950: '#000000',
  },
}

SCSS

$custom: #304e99;
$custom-light: #757fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#304e99",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 153
  },
  "hsl": {
    "h": 222.857,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44272,
    "c": 0.12768,
    "h": 265.2
  },
  "luminance": 0.08377
}

Semantic roles & 50–950 ramp

primary

#304E99

secondary

#BAA36B

accent

#B34CDC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #304E99

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →